21100000020110 has 64 divisors (see below), whose sum is σ = 43149103704000. Its totient is φ = 7358431180800.

The previous prime is 21100000020061. The next prime is 21100000020163. The reversal of 21100000020110 is 1102000000112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21720731 + ... + 22671350.

It is an arithmetic number, because the mean of its divisors is an integer number (674204745375).

Almost surely, 2^{21100000020110} is an apocalyptic number.

21100000020110 is an abundant number, since it is smaller than the sum of its proper divisors (22049103683890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21100000020110 is a wasteful number, since it uses less digits than its factorization.

21100000020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44392277.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21100000020110 its reverse (1102000000112), we get a palindrome (22202000020222).

The spelling of 21100000020110 in words is "twenty-one trillion, one hundred billion, twenty thousand, one hundred ten".